package com.ltc.service;

import org.springframework.stereotype.Service;
import org.springframework.util.Assert;

import java.util.ArrayList;

@Service
public class UserServiceImpl {

	public void test() {
		ArrayList<String> strings = new ArrayList<>();
		Assert.notEmpty(strings,"不能为空！");
		System.out.println(String.format("%s, %s", "hi", UserServiceImpl.class.toString()));
	}
}
